John e



(No Model.)

J E. UNGER. PORTABLE PARADIG BATTERY.

Patented Mar. 17, 1896.

ATTOR/VE Y5.

AN DREW EGRAHAM. PHOTO-IJINQWASNINGTUNJ C UNITED STATES JOHN E. UNGER, OF NEIV YORK, N.

PATENT ()EEICE.

Y., ASSIGNOR TO JACQUES LEVY, OF

SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 556,708, dated March 17, 1896.

A li ti fil d February 6, 1896. Serial No, 578,243. (No model.)

To LtZZ whom it nuty concern.-

Be it known that I, JOHN E. UNGER, a citizen of the Kingdom of Sweden, residing at New York, in the city, county, and State of New York, have invented certain new and useful Improvements in Portable Faradic Batteries, of which the following is a specification. 7

This invention relates to an improved portable faradic battery of that class known as pocket-batteries for physicians and surgeons use. Generally these devices consist of a portable casing containing a galvanic battery and an induction-coil adapted for use with various electrodes for applying the induction currents to diiferent parts of the human body.

In my invention the exterior casing of, the battery forms the electrodes and serves as an inclosure for a so-called dry battery and the induction-coil, so that the battery can either be held by both ends in the hands or held at one end in one hand, while the remaining part is applied by means of a sponge or other electrode to the part of the body to be treated, whereby the entire battery is made more compact and better adapted for external application, and the invent-i011 consists of a portable battery which comprises a tubular central portion of non-conductin g material, a sheet-metal casing fixed to said central portion and within which a suitable dry battery is placed, an induction-coil arranged on the core supported by the tubular central portion,a sliding casin g inelosin g said induction-coil and provided with a tubular portion extending over the core of the induction-coil and being guided on the central portion, contact devices between the battery and the induction-coil, a vibrator connected in the usual manner with said induction-coil, and a switch device by which the inductioncurrents are conducted to the fixed and sliding portions of the casingso that they can be used as electrodes, as will be hereinafter described and finally pointed out in the claims.

In the accompanying drawings, Figure 1 represents a side elevation of my improved portable faradic battery. Fig. 2 is a longitudinal section of the same. Fig. 3 is a transverse section on line 8 3, Fig. 2; and Fig. eis

a transverse section on line 4 4. of the same figure.

Similar letters of reference indicate corre sponding parts.

Referring to the drawings, A represents the tubular central portion or main body of my improved portable faradic battery, which is made of hard rubber or othernon-conductor of electricity and is reduced between its shouldered ends cl d. In the center of the central tubular portion A the core C of the induction-coil is arranged, it being entirely surrounded by the central portion A,as shown in Fig. 2.

()n the reduced portion a of the tubular portion surrounding the core O are arranged the usual primary and secondary windings of the induction-coil D, which are retained between the shoulders (I d at the inner and outer ends of said tubular portion. The i11- duetion-coil is inelosed by a sliding sheetmetal casing E, which is guided by a longitudinal slot 6 therein on a headed screw or pin 6 attached to the shoulder (Z of the central portion A. The end of the metallic sliding casing E is made with a hollow knob 6 so as to form connection with an electrode, if one is to be used in connection with the faradie battery. For ordinary purposes the sliding casin g forms one electrode of my improved battery. At the interior of the sliding easing E is fixed a brass tube E, which fits over the core 0 when inserted into the induction-coil and which serves as a damper to uncover the induction-coil more or less, so that induction-currents of increased or de creased strength are conducted through the body. The more the casing is drawn out the more the core is uncovered by the dampertube and the greater will be the strength of the induction-currents generated.

To the tubular central portion A is fixed a second casing E which is applied thereto by suitable fastening-screws E and in which a suitable dry battery F, of any approved con struction, is centered by arming it with circu inferential bands f havin g radial steadyingpins f, as shown in Fig. 2. The outer portion or body of the dry battery is connected by the bands and pins with the casing E while the carbon element thereof is connected ICQ by a center pin f with a contact-sprin g g attached to the hollow portion A of the central portion A, said contact-spring being electrically connected with the primary winding of the induction-coil D. The outer end of the stationary casing E is likewise provided with a perforated knob E for inserting therein connecting-wires ot' a suitable electrode in case the battery is to be used with separate electrodes.

The secondary winding is connected with a metallic block 71. attached to the interior hollow portion A of the tubular central portion A, said metallic contact-block being in turn connected by a switch-screw ll with the fixed casing E when the screw is turned inward sufficiently, so that its head forms contact with the casing E As soon as this is accomplished, the induction-coil operates in connection with the vibrator V in the usual manner, said vibrator being arranged in the hollow portion A of the tubular central portion A, as shown in Fig. 9, and formed of a vibrating contact-spring and a stop-scrcw, as is customary in induction-coils.

The connection of the secondary winding with the sliding casing or electrode is made by a contact-spring S that is connected with the secondary winding and applied to the nonconducting shoulder (Z of the central portion A, said spring being always in contact with the casing E, whether the same is in normal (ndrawn-out position. hen, therefore, the switch-screw II is turned in sufficiently so as to form contact with the casing E the circuit is closed and the induction-coil operated by the battery 1 By drawing the casin g E out more or less the ind notion-current is increased and can be regulated as required by ad justing the casing E on the induction-coil. ly removing the casing E sponges, brushes, or other electrodes can be applied to the induction-coil whenever special application to the body is made, the faradic battery being then held by the casing 11 which forms the other electrode The advantages of my improved faradic or pocket battery are, first, that the same can. be made in sizes which will answerall the requirements of the larger portable inductioncoils heretofore used; secondly, that by using a dry battery no spilling of acid is caused, while the new battery can be replaced with the greatest ease at any time when the old batteryhas run out, and ,thirdly, thelmtteryis quickly put into action so as to be quickly applied to any part of the body.

llaving thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A portable faradic battery, consisting of a tubular central portion formed of non-conducting material, an induction-coil arranged on said central portion, a sliding casing or electrode guided on the induction-coil and provided with an interior non-conducting damper-tube passing over the core of the induction-coil, a casing fixed to said tubular central portion, a battery in said casing electrically connected with the primary winding of the induction-coil, a vibrator connected with said primary winding, and a switch con necting the secondary winding of the induction-coil with the sliding and fixed casings or electrodes, substantially as set forth.

2. The combination, with a tubular central portion of non-conducting material, an induction-coil applied to the same, a casing fixed to the said central portion, a battery located in the same and electrically connected with said fixed casing, electrical. connection between the carbon element of the battery and the induction-coil, a vibrator, and a switch for starting and interrupting the inductioncoil, substantially as set forth.

3. The combination of a central tubuln r portion of non-conducting material, a softiron core arranged in the center of said tubular portion, an induction-coil arranged on the said central portion, a sliding easing or electrode guided on said ind notion-coil and placed in contact with the secondary winding of the same, a second casing or electrode .lixed lo the opposite end of the central tubular portion, a battery placed in said casin g and electrically connected with the same, means .t'or connecting the carbon pole of the battery with the induction-coil, and a switch connecting the fixed casing with the secondary winding of the indnctioircoil so as to induce the induction-current 10 the same, substain tially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

JOHN E. l'NHlCll. \V itnesses:

PAUL GOEPEL, illno '1. Lnvv. 

